Functional
electrolytic coatings of tin-nickel alloys for integrated circuits
Chem.
Met. Alloys 10 (2017)
50-53
https://doi.org/10.30970/cma10.0353
V.S. Kublanovsky, V.N. Nikitenko
The optimal
composition of a polyligand
ammonium-chloride-fluoride electrolyte and optimized electrolysis conditions
for the deposition of functional tin-nickel alloy coatings are proposed. A
tin-nickel alloy with a tin content of 65 wt.%
and a nickel content of 35 wt.% was found to be the most promising alloy
for replacing gold coating in microelectronics. It is shown that the obtained
coatings are suitable for soldering using low-temperature solders and acid-free
fluxes, and for ultrasonic spot welding.
SEM of electrolytic tin-nickel alloy coatings deposited
from an ammonium-chloride-fluoride electrolyte.
Keywords
Microelectronics
/ Functional coatings / Complex compounds / Electrodeposition
/ Tin-nickel alloy